Method of forming lubricative plated layer on viscous liquid feed nozzle and viscous liquid feed nozzle

A liquid feed nozzle, comprising:

• nozzle bodies, wherein each of the nozzle bodies is formed as a discrete hollow cylinder spaced from any adjacent nozzle body, and each of the nozzle bodies having a hole formed through the respective nozzle body in a longitudinal direction of the respective nozzle body and having a front end serving as a feed port, an inner peripheral surface of the respective nozzle body extending straight in said longitudinal direction to define the hole straightly in said longitudinal direction, and a length of the respective nozzle body in the longitudinal direction to define the hole straightly in said longitudinal direction, and a length of the respective nozzle body in the longitudinal direction being at least three times greater than an inner diameter of the respective hole of the nozzle body;
• the liquid feed nozzle further comprising:
• a wide port having a flat bottom wall to which the nozzle bodies are attached so that the nozzle bodies protrude from the bottom wall, a circumferential wall formed along an outer periphery of the bottom wall, and a shoulder part interposed between the bottom wall and the circumferential wall;
• a lubricative plated layer formed at least on a surface of an inside and outside of the feed port of each of the nozzle bodies so that the lubricative plated layer continuously extends from an inside of the respective hole through an end edge of the respective nozzle body to an outside of the respective nozzle body, the lubricative plated layer having a higher lubricating property than a surface on which the lubricative plated layer is formed;
• and
• wherein the shoulder part has a dimension in a lateral direction intersecting the longitudinal direction, the dimension being gradually reduced toward the bottom wall from the circumferential wall so that the outer periphery of the bottom wall is positioned inwardly from an inner periphery of the circumferential wall in the lateral direction, and
• wherein each of the nozzle bodies has an end face of the base end surrounding an opening of the respective hole at the base end of the respective nozzle body, the end face and the opening facing an inside of the wide port and the end face continuing flat to a surface of the bottom wall inside the wide port, and wherein distances spanning from the shoulder to proximate nozzle bodies in a radial direction of the wide port are longer than a radial distance defined by the dimension of the shoulder.

A liquid feed nozzle, comprising:

• nozzle bodies, wherein each of the nozzle bodies is formed as a discrete hollow cylinder spaced from any adjacent nozzle body, and each of the respective nozzle bodies being provided with a hole and having a front end serving as a feed port, an inner peripheral surface extending straight in a longitudinal direction of the respective nozzle body to define the hole straightly in said longitudinal direction, and a length of the respective nozzle body being at least three times greater than an inner diameter of the respective hole of the nozzle body;
• the liquid feed nozzle further comprising:
• a wide port;
• and
• a lubricative plated layer formed at least on a surface of an inside and outside of the feed port of each of the nozzle bodies, the lubricative plated layer having a higher lubricating property than a surface on which the lubricative plated layer is formed;
• wherein the wide port has a flat bottom wall on the base end of the nozzle body, a circumferential wall formed along an outer periphery of the bottom wall, respective attaching holes formed through the bottom wall to which each respective nozzle body is attached, and a shoulder part interposed between the bottom wall and the circumferential wall,
• wherein the shoulder part has a dimension in a lateral direction intersecting the longitudinal direction, the dimension being gradually reduced toward the bottom wall from the circumferential wall so that the outer periphery of the bottom wall is positioned inwardly from an inner periphery of the circumferential wall in the lateral direction, and
• wherein each of the nozzle bodies has an end face of the base end surrounding an opening of the respective hole at the base end of the respective nozzle body and the base end of the respective nozzle body is inserted into one of the respective attaching holes of the bottom wall so that the end face and the opening face an inside of the wide port and the end face continues flat to a surface of the bottom wall inside the wide port, and wherein distances spanning from the shoulder to proximate nozzle bodies in a radial direction of the wide port are longer than a radial distance defined by the dimension of the shoulder.